Computer-controlled dynamic phantom for ultrasound hyperthermia studies.
A dynamic phantom system for use in evaluating hyperthermia heating equipment has been designed, constructed, and tested. It consists of four in vitro preserved canine kidneys perfused with an 80% ethanol preparation by a single pump, plus four computer-controlled valves and four flow meters. The flow rate to each kidney is computer-controlled, giving flexibility in the types of spatial and temporal flow patterns possible. Examples are given for both step and ramp changes in flow, and for a temperature dependent flow which has been used to simulate physiological responses to elevated temperatures.
Zaerr
J
J
Department of Radiation Oncology, University of Arizona, Tucson 85721.
Roemer
R B
RB
Hynynen
K
K
D000818:Animals; D004285:Dogs; D004867:Equipment Design; D006979:Hyperthermia, Induced / Q000295:instrumentation*; D066298:In Vitro Techniques; D007668:Kidney / Q000502:physiology*; D008954:Models, Biological; D008961:Models, Structural; D009926:Organ Preservation; D015203:Reproducibility of Results; D012984:Software